EP1886842A2 - Pneumatique radial pour véhicules poids lourds avec armature de sommet continuée et pliée - Google Patents

Pneumatique radial pour véhicules poids lourds avec armature de sommet continuée et pliée Download PDF

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Publication number
EP1886842A2
EP1886842A2 EP07011230A EP07011230A EP1886842A2 EP 1886842 A2 EP1886842 A2 EP 1886842A2 EP 07011230 A EP07011230 A EP 07011230A EP 07011230 A EP07011230 A EP 07011230A EP 1886842 A2 EP1886842 A2 EP 1886842A2
Authority
EP
European Patent Office
Prior art keywords
belt
ply
layer
tire according
tire
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07011230A
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German (de)
English (en)
Other versions
EP1886842B1 (fr
EP1886842A3 (fr
Inventor
Volkmar Fries
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Continental Reifen Deutschland GmbH
Original Assignee
Continental AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Continental AG filed Critical Continental AG
Priority to PL07011230T priority Critical patent/PL1886842T3/pl
Publication of EP1886842A2 publication Critical patent/EP1886842A2/fr
Publication of EP1886842A3 publication Critical patent/EP1886842A3/fr
Application granted granted Critical
Publication of EP1886842B1 publication Critical patent/EP1886842B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/26—Folded plies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
    • B60C9/00—Reinforcements or ply arrangement of pneumatic tyres
    • B60C9/18—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers
    • B60C9/20—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel
    • B60C9/2003—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords
    • B60C9/2006—Structure or arrangement of belts or breakers, crown-reinforcing or cushioning layers built-up from rubberised plies each having all cords arranged substantially parallel characterised by the materials of the belt cords consisting of steel cord plies only

Definitions

  • the invention relates to a pneumatic vehicle tire for heavy-duty vehicles in radial design with a belt at least three-band, which strength of steel cord or a similar stiffness and strength contains material and at least one 0 ° layer with or extending in the tire circumferential direction of strength supports, wherein the strength carrier in the other belt layers should be at least 10 ° in the tire circumferential direction.
  • One of the common belt designs for truck tires is the so-called triangle belt, which typically has three or four belt plies.
  • the steel cords in the first belt ply enclose with the circumferential direction of the tire an angle which is between 45 ° and 65 °
  • the steel cords in the second, widest belt ply, a so-called working ply close an angle of the order of 10 ° to 30 ° with the circumferential direction and are arranged gleichfard to the steel cords in the first belt layer.
  • the steel cords in the third belt ply, the second work ply enclose an angle of 10 ° to 30 ° with the tire circumferential direction, and are crossed to the steel cords in the second belt ply.
  • the steel cords with the tire circumferential direction enclose an angle of between 10 ° and 30 ° with the steel cords being either leveled or crossed with the steel cords in the third belt ply. It is also known to provide at least one belt ply in a multi-ply, especially three- to five-ply belt for truck tires, in which the steel cords run in the tire circumferential direction or at a very small angle, in any case less than 5 °, to the tire circumferential direction. This 0 ° -layer (s) in the belt association of truck tires stiffen or stiffen the tire in the circumferential direction and have favorable effects on the abrasion and handling of the tire.
  • a car tire whose belt has a folding belt layer containing metallic reinforcing members that extend at an angle between 10 ° and 30 ° to the tire circumferential direction.
  • the Faltgürtellage is covered by at least one textile cord layer, run the cords in the tire circumferential direction and consist of a heat-shrinkable material.
  • the in the DE 24 34 760 described embodiment is not suitable for a solution of the above-mentioned conflict of objectives, also because heat-shrinkable textile cords, usually nylon is used in car tires here, do not have the necessary rigidity and strength for truck tires.
  • the invention is based on the object, in a truck tire of the type mentioned to perform the belt bandage such that the conflict of goals between increased abrasion in the shoulder areas and the belt durability is achieved.
  • the tire should be particularly well suited for use on the drive axle of trucks as a single tire.
  • one of the belt layers is a Faltgürtellage
  • the belt assembly contains at least one more conventionally executed belt layer, the Faltgürtellage, apart from at most one provided as a further belt layer position, the widest belt layer and a continuous layer section or from two centrally spaced ply sections laterally folded back layer sections.
  • Truck tires with inventively designed belt assemblies have on the one hand in the tire shoulders on a high circumferential rigidity, which is not achieved with the previously known technical versions. As a result, a uniform abrasion image is achieved even in the tire shoulders. On the other hand, free belt edges of working positions are avoided in the shoulder areas, which has a particularly favorable effect on the belt durability.
  • the or another belt layer is the radially outermost belt layer (claim 2).
  • the or another belt layer directly adjoins the folding belt layer (claim 3).
  • the or another belt layer is a second 0 ° layer, which is arranged adjacent to the first 0 ° layer and preferably the same width as this is carried out (claim 4)
  • a conventional belt ply is arranged in the position of the first belt ply as a further belt ply (claim 5). In this position, a very wide belt layer is uncritical regarding cord breakage.
  • the or a further belt ply is arranged between the ply sections of the folded belt ply (claim 6).
  • This embodiment is particularly advantageous for the circumferential stiffness of the belt association. It is also advantageous for the circumferential rigidity, if the 0 ° layer (s) is or are arranged between the ply sections of the Faltgürtellage, in addition to the or another belt layer with or 0 ° position (s) between the layer portions of the Faltgürtellage can be arranged (claims 7 and 8).
  • the further belt layer provided in combination with the 0 ° layer (s) may extend radially outside or radially inside the 0 ° layer (s) (claim 9).
  • the 0 ° layer (s) is or are arranged radially inside or radially outside the folded belt layer (claim 10).
  • This variant is associated with a simpler construction of the belt when manufacturing the green tire, as the Faltgürtellage is applied as a separate belt layer and no layers must be inserted.
  • the pneumatic vehicle tires shown in the drawing figures are truck tires, in particular tires with a relatively large cross-sectional width, for example the dimension 495/45 R22.5, which are preferably used on the drive axle of trucks instead of the usual twin tires.
  • some major components of the pneumatic vehicle tire are designated, namely the radial carcass 1, which extends from axially inside to axially outside around bead cores 2a in bead areas 2, the side walls 3 and the tread 4, which is shown without profiling for the sake of simplicity. Between the radial carcass 1 and the tread 4 a belt bandage is introduced, which consists of several layers.
  • Each belt ply of the belt bandages described in detail below consists of reinforcements embedded in a rubber layer, preferably of steel cord or another material of high rigidity and strength, for example aramid.
  • the steel cords run parallel to each other in each belt position, under the usual intervals for belt layers of truck tires and are composed of at least 4 partial strands (filaments) with diameters between 0.15 mm and 0.40 mm.
  • Under 0 ° layer is a belt layer to understand, which contains circumferentially or almost circumferentially extending steel cords. Adjacent belt layers are said to be the same if the steel cords they contain have a coincident inclination direction to the circumferential direction, and the angles that they include with the circumferential direction may be the same or different. As crossing or crossed steel cords in adjacent belt layers are then designated, if in one position the steel cords are inclined to the circumferential direction in one direction and the steel cords in the other position to the circumferential direction have a tendency in the other direction.
  • the belt plies will be described in the following description, in which the immediately adjacent layer of the radial carcass is referred to as the first belt ply.
  • the other belt layers which are referred to as second, third and fourth belt layer, for example.
  • FIGS. 10 to 13 show belt structures and belt constructions of the prior art.
  • the belt bandage shown in Fig. 10 has belt plies 20, 21, 22 and 23, wherein the steel cords in the first belt ply 20 extend at an angle selected from 45 ° to 65 ° to the circumferential direction.
  • the steel cords in the second belt ply 21 are arranged to be the same as those in the first belt ply 20, and the angle they enclose with the circumferential direction is selected to be between 10 ° and 30 °.
  • the third belt layer 22 contains steel cords, which are also at an angle between 10 ° and 30 ° to the circumferential direction and are arranged crossed to the steel cords in the second belt layer 21.
  • the steel cords in the fourth radially outermost belt ply 23 are at an angle of 10 ° to 30 ° to the circumferential direction, either crossed or equal to the steel cords in the third belt ply 22.
  • This belt construction is referred to as a triangle belt.
  • the widest belt ply is the second belt ply 21, the third belt ply 22 is made substantially the same width as the first belt ply 20, and the fourth belt ply 23 is the narrowest of all belt plies.
  • Fig. 11 shows another truck tire with a belt dressing made according to the prior art.
  • the belt assembly shown has five belt plies 20, 21, 22, 23 and 24.
  • the first belt ply 20 contains steel cords inclined at an angle between 10 ° and 30 ° to the circumferential direction
  • the second belt ply 21 contains steel cords which are also at an angle between 10 ° and 30 ° to the circumferential direction, but crossed to the steel cords in FIG the first layer 20.
  • the third layer and the fourth layer 22, 23 are 0 ° layers.
  • the radially outermost layer 24 is a layer whose steel cords are oriented at an angle between 10 ° and 30 ° to the circumferential direction. Instead of the two 0 ° layers 22, 23, a single 0 ° layer can also be provided.
  • the first belt layer 20 is the widest of all belt layers, the next broader belt layer is the second belt layer 21.
  • the 0 ° layers 22 and 23 are slightly narrower than the fifth belt layer covering them.
  • the 0 ° layers between the two working layers 21 and 24 stiffen the belt bandage in the circumferential direction.
  • the first belt ply 20 contains steel cords extending at an angle between 10 ° and 30 ° to the circumferential direction
  • the second belt ply 21 is a 0 ° ply
  • the third belt ply contains steel cords which at an angle between 10 ° and 30 ° to the circumferential direction and to those crossed in the first belt ply 20.
  • the radially outermost layer, the fourth belt layer 23 has steel cords which enclose an angle between 10 ° and 30 ° with the circumferential direction and either crossed or gleichmonyd to those of the third belt layer 22 run.
  • the widest belt ply 20 is the radially innermost, the 0 ° ply is slightly narrower than the radially outermost belt ply 23 and the third belt ply 22 is slightly narrower than the first belt ply 20.
  • the 0 ° ply 21 between the two work plies 20 and 22 decouples the layers 20, 22 mechanically and therefore requires a greater radial distance between the belt edges of the layers 20,22.
  • Fig. 13 shows another prior art belt structure having two 0 ° plies as first and second belt plies 20, 21, a third belt plies 22 being the widest of all belt plies and containing steel cords having an angle between the 30th and the circumferential direction ° and 60 °, the radially outermost fourth belt ply 23 being the narrowest belt ply and containing steel cords also enclosing an angle between 30 ° and 60 ° with the circumferential direction, these steel cords being crossed to those in the third belt ply 22 ,
  • the circumferential rigidity of the tire is ensured almost exclusively via the 0 ° layers 20, 21.
  • this known construction results in insufficient circumferential stiffness, as a result of which shoulder abrasion is disadvantageously favored.
  • Fig. 1 to Fig. 9 show possible embodiments of the present invention executed belt assemblies.
  • the carcass 1 immediately adjacent two lateral ply portions 15a of a two-part Faltgürtellage 15.
  • the ply portions 15a terminate at a mutual distance and go over envelopes around the edges of two 0 ° layers 16, 17 in further ply sections 15b, which are made shorter than the layer portions 15a.
  • the radially outermost belt ply 18 contains steel cords extending at an angle selected between 10 ° and 60 ° and terminating before the folds of the pleat belt ply 15.
  • the angle that the steel cords in the sections 15a, 15b of the pleat belt plies 15 with the circumferentially is between 10 ° and 60 ° with the steel cords in the ply sections 15a crossed to the steel cords in the fourth belt ply 18.
  • the steel cords in the ply portions 15b are therefore arranged to be equal to the steel cords in the belt ply 18.
  • This belt construction avoids exposed belt edges of working positions and has, due to the two 0 ° layers, a high circumferential stiffness, even in the tire shoulders on. With this belt construction, lighter truck tires can only provide a 0 ° layer.
  • the Faltgürtellage 15 ' is made in one piece and has a continuous, the Radialkarkasse 1 adjacent extending layer portion 15'a and after turning around the lateral edges of two 0 ° layers 16, 17 two layer sections 15' b on.
  • the further structure of this belt association corresponds to that shown in FIG. 1 and therefore matching reference numerals have been chosen.
  • the first belt layer 19 is the widest position and contains steel cords, which extend at an angle between 10 ° and 60 ° to the circumferential direction.
  • To the first belt layer 14 include further belt layers 15 ', 16, 17 and 18, which are executed and arranged according to the embodiment shown in Fig. 2. In this case, the steel cords in the first belt ply 19 are crossed to those in the ply portion 15'a of the folded belt ply 15 '.
  • Fig. 4 shows a variant in which the first belt ply is a one-piece pleated belt ply 15 "having a continuous ply portion 15" a and two turned-over portions 15 "b which have been turned over to the continuous portion 15" a.
  • the steel cords in the continuous section 15 "a extend at an angle of between 10 ° and 60 ° to the circumferential direction.”
  • a belt ply 19 is applied to the pleat belt ply 15 "which covers the axially inner belt edges of the ply sections 15" b Circumferential direction at an angle which is selected between 10 ° and 60 ° and crossed to the steel cords in the layer section 15 "a of Faltgürtellage 15" crossed to the belt layer 19 connect two 0 ° plies 16, 17 which are slightly wider than the belt ply 19 but narrower than the pleat belt ply 15 ".”
  • the radially outermost belt ply 18 is about the same width as the belt ply 19 and contains steel cords with the circumferential direction an angle between 10 ° and 60 ° and the arrangement of which may be equal or crossed to the steel cords in the belt ply 19.
  • the ply portions 15 "b may be made to vary in width, for example to the tire center. Also in this embodiment, it is advantageous that the folding belt layer 15 "and the two 0 ° layers 16, 17 provide high circumferential rigidity, even in the tire shoulders, and free belt edges of working positions are avoided. Layers 16, 17 may be provided only a 0 ° position and it may be omitted one of the belt layers 18, 19.
  • Fig. 5 shows a variant embodiment in which the first belt ply 19 is the widest belt ply and contains steel cords whose reinforcing members enclose an angle between 10 ° and 60 ° with the circumferential direction.
  • the second and the third belt ply 16, 17 are 0 ° plies
  • the fourth belt ply 15 " is a pleat belt ply and consists of a continuous ply section 15" a and, after the two envelopes, of ply sections 15 "b which face the ply section 15 "a are returned.
  • the radially outermost belt ply 18 is slightly narrower than the pleat belt ply 15 "and contains steel cords which enclose an angle between 10 ° and 60 ° with the circumferential direction and which are crossed to the steel cords in the ply sections 15" b.
  • the steel cords in the continuous ply portion 15 "b of the pleat belt ply 15" also enclose an angle between 10 ° and 60 ° with the circumferential direction and are crossed to the steel cords in the first belt ply 19.
  • the width of the folded layer sections 15 "b of the folding belt layer 15" can be varied in this variant. One of the layers 18, 19 could be omitted.
  • the belt ply 15 "' consists of a continuous ply portion 15"'a adjacent the radial carcass and two downstream Envelope formed layers sections 15 "'b located on an interposed belt ply 19.
  • the steel cords in the ply portion 15"' a of the pleat belt ply 15 "extend at an angle of between 10 ° and 60 ° to the tire circumferential direction and intersect the steel cords in the belt ply 19, which enclose with the circumferential direction an angle between 10 ° and 60 ° to the ply portions 15 "'b and the belt ply 19 close two 0 ° layers 16, 17, which are in particular made equal width and slightly narrower than
  • a conventionally designed belt ply is provided, the steel cords of which enclose an angle of between 10 ° and 60 ° with the circumferential direction of the tire, and which are crossed or equidistant to the steel cords in the ply 19
  • only a 0 ° position can be provided and it can be the radially outermost Belt layer 18 should be omitted.
  • Fig. 7 shows a variant of the invention in which the first two belt layers 16, 17 are 0 ° layers.
  • the 0 ° layers 16, 17 are followed by a folding belt layer 15 "', which is somewhat wider than the 0 ° layers 16, 17 and which, analogously to FIG. 6, has a continuous layer section 15"' a and two folded layer sections 15 "'b and 15"' a has.
  • a belt ply 19 is positioned in the pleat belt ply 15 ''.
  • the steel cords in the ply portion 15 "'a of the pleat belt ply 15'" extend at an angle between 10 ° and 60 ° to the circumferential direction
  • the steel cords in the belt ply 19 also extend at an angle chosen between 10 ° and 60 ° to the circumferential direction of the tire and crossed to the steel cords in the ply portion 15 "'a.
  • the radially outermost belt ply 18 covers the axially inner belt edges of the ply portions 15 "'b and is slightly narrower than the 0 ° plies 16, 17.
  • the steel cords in the radially outermost belt ply 18 extend at an angle between 10 ° and 60 ° Circumferential direction and gleichfard to the steel cords in the belt layer 19.
  • a 0 ° layer may be provided and it may be the radially outermost belt layer 18 omitted.
  • FIG. 8 and FIG. 9 show variations of a belt dressing, in which the 0 ° plies 16, 17 between the bearing portions 15 b and IV the layer portion 15 are arranged a IV a Faltgürtellage 15 IV.
  • the folding belt layer 15 IV adjoining the belt ply 19 also encloses the belt edges of a further belt ply 20, which is arranged either radially inside (FIG. 8) or radially outside (FIG. 9) of the two 0 ° plies 16, 17.
  • the radially outermost belt ply 18 is slightly narrower than the Faltgürtellage 15 IV and covers at least the axially inner free edges of the belt ply portions 15 of the IV b Faltgürtellage 15 IV. Also in this embodiment, depending on the intended use of the tire, be provided to provide only a 0 ° position and / or omit one of the belt layers 18, 19.
  • the invention is not limited to the illustrated embodiments.
  • constructive measures from the individual variants can be combined.
  • the laterally recirculated portions may also be the radially inner portions.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Tires In General (AREA)
EP07011230.5A 2006-08-07 2007-06-08 Pneumatique radial pour véhicules poids lourds avec armature de sommet continuée et pliée Not-in-force EP1886842B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07011230T PL1886842T3 (pl) 2006-08-07 2007-06-08 Opona pneumatyczna pojazdów do przewozu ciężkich ładunków, z pasem sfałdowanym

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006037114A DE102006037114A1 (de) 2006-08-07 2006-08-07 Fahrzeugluftreifen für Schwerlastfahrzeug

Publications (3)

Publication Number Publication Date
EP1886842A2 true EP1886842A2 (fr) 2008-02-13
EP1886842A3 EP1886842A3 (fr) 2013-01-23
EP1886842B1 EP1886842B1 (fr) 2014-08-13

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ID=38692035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07011230.5A Not-in-force EP1886842B1 (fr) 2006-08-07 2007-06-08 Pneumatique radial pour véhicules poids lourds avec armature de sommet continuée et pliée

Country Status (4)

Country Link
EP (1) EP1886842B1 (fr)
DE (1) DE102006037114A1 (fr)
ES (1) ES2522581T3 (fr)
PL (1) PL1886842T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060412A1 (fr) * 2007-11-15 2009-05-20 Continental Aktiengesellschaft Pneus de véhicule

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009026182B4 (de) 2009-07-16 2024-05-02 Continental Reifen Deutschland Gmbh Fahrzeugluftreifen

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189401B (de) 1958-09-10 1965-03-18 Dunlop Gummi Cie Ag Deutsche Laufflaechenverstaerkungseinlage
DE2434760A1 (de) 1973-07-23 1975-02-06 Pirelli Luftreifen fuer fahrzeugraeder
DE2349060A1 (de) 1973-09-29 1975-04-10 Bayer Ag Gefalteter radialreifen
DE2719798A1 (de) 1977-05-03 1978-11-16 Uniroyal Ag Hochbelastbarer stahlkord-guertelreifen, insbesondere fuer lastkraftwagen, schwer- und/oder grossfahrzeuge mit einer mindestens einlagigen radialkarkasse, vorzugsweise aus stahlkord, und einer mehrlagigen guertelartigen verstaerkung, welche wenigstens eine faltlage aus stahlkord und wenigstens eine weitere ungefaltete lage aus textilkord aufweist
JP2004322783A (ja) 2003-04-23 2004-11-18 Yokohama Rubber Co Ltd:The 重荷重用空気入りラジアルタイヤ
WO2005113258A1 (fr) 2004-05-13 2005-12-01 Societe De Technologie Michelin Pneumatique pour vehicules lourds

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1189401B (de) 1958-09-10 1965-03-18 Dunlop Gummi Cie Ag Deutsche Laufflaechenverstaerkungseinlage
DE2434760A1 (de) 1973-07-23 1975-02-06 Pirelli Luftreifen fuer fahrzeugraeder
DE2349060A1 (de) 1973-09-29 1975-04-10 Bayer Ag Gefalteter radialreifen
DE2719798A1 (de) 1977-05-03 1978-11-16 Uniroyal Ag Hochbelastbarer stahlkord-guertelreifen, insbesondere fuer lastkraftwagen, schwer- und/oder grossfahrzeuge mit einer mindestens einlagigen radialkarkasse, vorzugsweise aus stahlkord, und einer mehrlagigen guertelartigen verstaerkung, welche wenigstens eine faltlage aus stahlkord und wenigstens eine weitere ungefaltete lage aus textilkord aufweist
JP2004322783A (ja) 2003-04-23 2004-11-18 Yokohama Rubber Co Ltd:The 重荷重用空気入りラジアルタイヤ
WO2005113258A1 (fr) 2004-05-13 2005-12-01 Societe De Technologie Michelin Pneumatique pour vehicules lourds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2060412A1 (fr) * 2007-11-15 2009-05-20 Continental Aktiengesellschaft Pneus de véhicule

Also Published As

Publication number Publication date
EP1886842B1 (fr) 2014-08-13
ES2522581T3 (es) 2014-11-17
PL1886842T3 (pl) 2015-01-30
DE102006037114A1 (de) 2008-02-14
EP1886842A3 (fr) 2013-01-23

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